My first impression of the product was that it was a weighty, beautiful piece of precision engineering. I was right. The process of chiselling out careful crevices to a accommodate it was wonderfully rewarding. The lock closed like a bank vault - it is much admired. You've guessed now - I love it.

Very strong and study lock, well made and feels it will be very secure. Easy to fit as it replaced a similar lock which had become worn out after 20 years of use. I was able to use the existing holes in the door and very little to make good. I did do a lot of research to ensure that this new lock would fit my existing door. The finish of the lock looks good and the lock closes with a nice sounding clunk which demonstrates the strength and quality of this lock. A very good product and I would have no hesitation in using another one.

The lock was relatively easy to fit with my fairly basic DIY skills. It was replacing an existing (lower quality) Yale lock and I needed to make some modifications to the hole through the door and the frame to get everything to fit, but it was fairly straightforward. The resulting system is very solid and closes beautifully (unlike the old one), with a very satisfying clunk. The deadlock feature is something I probably won't use very much, but nice to have just in case.

Superb lock, well made and very secure. Easy to fit as it replaced another Yale lock. The paper guides and charts could be made of card or stiff paper as it's easy to move/ crumple it and end up with the guide out of alignment. I thought I was going to have a .5mm problem when assembling last piece but it all pulled together perfectly at the end. The piece has a good weight and sounds like it's very well made. I'd give yourself a couple of hours to fit the lock, and depending on door frame, another hour to fit the recess (I had to recess the recess in the wall). Very satisfying job to do though.

I bought the current lock to replace a previous lock - issues with who had keys! - so the fitting was so easy and everything slotted in perfectly. The original lock (3 locks ago) took more time and a little working out but still it was easy to do and required little real expertise other than some woodworking skills and an abilioty to understand the instructions and some technical terms. Once understood, it was easy. Am very pleased and so is my insurance company!

Good solid Yale lock which can also be operated as a dead lock. (Sadly my insurance company did not agree - I don't think they are in touch with all the products on the market) The lock was easy to fit using tools that I already had in my kit.The instructions were clear and the paper template was invaluable. The staple (fixed to the door frame) had an opening slightly larger than the tongue of the lock so alignment was not a problem. This new lock is slightly more bulky than the previous traditional Yale lock, but not a problem inside a large workshop door. Buying this lock on line was a lot cheaper than any of my local suppliers.